
$141 Cheap flight deals from St. Louis (STL) to Casco Bay Islands (PWM)
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This Weekend's Flight Deals from St. Louis to Casco Bay Islands
This weekend's flight prices found within the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply.
Airfares from $141 One Way, $284 Round Trip from St. Louis to Casco Bay Islands
Prices starting at $284 for return flights and $141 for one-way flights to Casco Bay Islands were the cheapest prices found within the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply.
Casco Bay Islands economy flight packages

Portland Harbor Hotel
Feb 27 - Mar 2
St. Louis (STL) to Portland (PWM)
Portland (PWM) to St. Louis (STL)
Reviewed on Dec 8, 2025

The Docent’s Collection – Thompson Block
Feb 27 - Mar 2
St. Louis (STL) to Portland (PWM)
Portland (PWM) to St. Louis (STL)
Reviewed on Mar 10, 2023

Portland Regency Hotel & Spa
Feb 27 - Mar 2
St. Louis (STL) to Portland (PWM)
Portland (PWM) to St. Louis (STL)
Reviewed on Sep 12, 2025
More About Flying To Casco Bay Islands from St. Louis
Route Information for Flights from St. Louis to Casco Bay Islands
Origin Airport IATA Code | STL |
|---|---|
Destination Airport IATA Code | PWM |
Distance | |
Direct Flight Airlines | |
Earliest Flight Arrival | |
Latest Flight Arrival |
St. Louis to Casco Bay Islands
Orbitz has your discount air ticket deals for flights from St. Louis to Casco Bay Islands. The guaranteed low prices from flights and hotels to car rentals and vacation packages make Orbitz the perfect travel website for budget trip planning.
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Orbitz Keeps You Up-to-Date With Instant Flight Alerts
While Orbitz gives you access to cheap tickets for St. Louis to Casco Bay Islands flights, the travel site also offers free email, voice, or text message alerts to keep you informed of any abrupt changes or delays that affect your travel. You can even choose to have the alerts sent to up to six of your mobile or email contacts to keep your friends in the loop.
Bargain St. Louis to Casco Bay Islands Flights With Mobile Apps
Download the cutting-edge Orbitz app for either Android or iPhone, and use it to check on the status of your upcoming flights from St. Louis to Casco Bay Islands at any time. These apps also make it easy for you to book discount hotel rates in your destination city and check for deals on future St. Louis to Casco Bay Islands flights.
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Fare, taxes & fees: Fares include all taxes and fees, except baggage fees. Rates shown reflect fares found by other Orbitz users over the past 7 days. Due to rapidly changing airline prices & seat availability, these fares may no longer be available.
Refunds/changes/cancellations: Itinerary changes, if permitted for the fare, will have a $30 service fee charged by Orbitz. Additional airline charges may apply.
Other conditions: Schedules, fares and rules are subject to change without notice. Seats are limited and may not be available on all flights/dates or in all markets. Lower fares may be available. Fares will not be honored retroactively or in exchange for any wholly/partially unused ticket. Tickets are non-transferable and non-refundable. Fare rules are provided for the selected itinerary before booking.
